Chris Smith and the Naked Scientist explore a potential new therapy for Multiple Sclerosis and last data from Cassini as it plunged into Saturn. In addition, we get to the bottom of how and why electric eels jump out and shock people and animals. Plus, can memories be faked and why are some sports can be linked with memory loss? Find out all this as well as the latest discovery on climate change. Download the podcast: bbc.co.uk/podcasts/5live